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Wind Chill - As If it Wasn't Cold Enough!

Wind increases the rate at which a body loses heat. The air on a windy day feels colder than that indicated by a thermometer, and this is known as "wind chill".

On a calm day, our bodies help to insulate us by warming up a thin layer of air close to our skin, known as the "boundary layer". The wind takes this protective layer away, and it takes energy for our bodies to warm up a new layer. As each layer keeps getting blown away, our skin temperature drops, and we feel colder.

Wind also makes you feel colder by evaporating any moisture on your skin. When your skin is wet, it loses heat much faster than when it is dry.

Taking shelter from the wind can reduce or even eliminate the wind chill factor. If you don't take steps to protect yourself in very cold weather, you may end up with frostnip or frostbite.

Picture-Top: Building a snow wall.

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Library: Cold/Cold Places, Health/Safety
Environment, Arctic
How to Prevent Frostbite
Frostnipped? Here's What to Do
Links: Cold Places, Arctic
Arctic Maps & Weather Reports

Double-click any unlinked word DICTIONARY: Just "double-click" any unlinked word on this page for the definition from Merriam-Webster's Student Electronic Dictionary at Word Central.
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A Guide to Arctic Sunrise and Sunset GUIDE TO ARCTIC SUNRISE & SUNSET: How much sunlight or darkness is there in the Arctic on each day of the year?

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